Some pictures that I take are blurry

In low lighting conditions, the camera might compensate for the
lack of exposure by using a slower shutter speed. If you move the
camera before the shutter clicks, the picture might be blurry. If the camera is using a slower shutter speed, an exclamation point indicator appears at the bottom of the screen.

Depending on your BlackBerry®
device model, you might be able to decrease the blurriness in pictures that is caused by slight movements of the camera by turning on image stabilization in the camera options.